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  Reducing Thermal Noise in Future Gravitational Wave Detectors by employing Khalili Etalons

Gurkovsky, A. G., Heiner, D., Hild, S., Nawrodt, R., Somiya, K., Vyatchanin, S. P., et al. (2011). Reducing Thermal Noise in Future Gravitational Wave Detectors by employing Khalili Etalons. Physics Letters. A, 375(46), 4147-4157. doi:10.1016/j.physleta.2011.07.063.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-0153-E Version Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-0154-C
Genre: Journal Article

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 Creators:
Gurkovsky, Alexey G., Author
Heiner, Daniel, Author
Hild, Stefan1, Author              
Nawrodt, Ronny, Author
Somiya, Kentaro1, Author              
Vyatchanin, Sergey P., Author
Wittel, Holger1, Author              
Affiliations:
1Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24010              

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Free keywords: General Relativity and Quantum Cosmology, gr-qc
 Abstract: Reduction of thermal noise in dielectric mirror coatings is a key issue for the sensitivity improvement in second and third generation interferometric gravitational wave detectors. Replacing an end mirror of the interferometer by an anti-resonant cavity (a so-called Khalili cavity) has been proposed to realize the reduction of the overall thermal noise level. In this article we show that the use of a Khalili etalon, which requires less hardware than a Khalili cavity, yields still a significant reduction of thermal noise. We identify the optimum distribution of coating layers on the front and rear surfaces of the etalon and compare the total noise budget with a conventional mirror. In addition we briefly discuss advantages and disadvantages of the Khalili etalon compared with the Khalili cavity in terms of technical aspects, such as interferometric length control and thermal lensing.

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 Dates: 2011-07-212011
 Publication Status: Published in print
 Pages: 13 pages, 9 figures
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: arXiv: 1107.4167
DOI: 10.1016/j.physleta.2011.07.063
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Title: Physics Letters. A
  Other : Phys. Lett. A
Source Genre: Journal
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Publ. Info: North-Holland
Pages: - Volume / Issue: 375 (46) Sequence Number: - Start / End Page: 4147 - 4157 Identifier: ISSN: 0375-9601
CoNE: /journals/resource/954925525800